It has now been confirmed that there were two people in the car - a woman and a child - and not three as previously reported by the British Transport Police.
A spokesperson said: “The car contained two occupants, a woman and a child. The child sustained serious injuries and has been airlifted to hospital in Sheffield. The driver, a woman, received minor injuries and has been taken to hospital in Doncaster.
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A very windy spell Saturday evening, and remaining gusty into Sunday. Colder air by the end of the weekend - sunshine & wintry showers.
Clouding up. Rain moving east after dark. Very windy tonight.
The Government scheme would benefit those aged under 40 but will only run for five years.